Tesco has reduced the amount of glass used in its wine bottles by over 300 tonnes.

The supermarket giant has worked with suppliers and Sustainable Wine Roundtable (SWR), an independent global platform dedicated to advancing sustainability in the wine industry, to develop lighter wine bottles, which remove unnecessary glass.

Through its Bottle Weight Accord, SWR aims to reduce the average bottle weight across the industry to 420g per bottle by 2026, from the current bottle weight average of 550g.

As part of Tesco’s ongoing commitment to the industry and the Roundtable, it has already surpassed that target achieving a 410g bottle weight average. 

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Working closely with suppliers, the grocer has removed over 300 tonnes of glass from its wine supply chain and hopes to remove a further 3,000 tonnes of glass from its range in 2025, across both still and sparkling wines.

The move follows research by SWR, which found that half of wine’s carbon impact can be attributed to the glass bottle. 

Tesco beers, wines and spirits director Jason Godley said: “Removing unnecessary glass is a crucial step in Tesco reducing its environmental impact. For too long, we’ve associated heavier bottles with higher quality, and the lighter bottles show that this is not true. The bottles hold the same quality wine, delivering fantastic flavour at brilliant prices.

“We’re proud of the work we’ve done so far with our suppliers to reduce glass, but we are determined to do more.”